CN105701193A - Method for rapidly searching for traffic big data dynamic information and application thereof - Google Patents
Method for rapidly searching for traffic big data dynamic information and application thereof Download PDFInfo
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Abstract
The invention relates to a method for rapidly searching for traffic big data dynamic information and an application thereof. The rapid searching method comprises the following steps: A1), receiving a search task; and A2), performing a semantic search on a built road traffic ontology library according to the search task in order to obtain corresponding dynamic information and semantic information, wherein the road traffic ontology library is specifically built by the following steps: A21), building a road traffic ontology model, and making a mapping rule with a D2RQ mapping language in order to obtain a corresponding mapping file; A22), acquiring static traffic data and dynamic traffic data storage information on a big data platform; A23), mapping the static traffic data and dynamic traffic data storage information into ontology instance data according to the road traffic ontology model and the mapping file; and A24), generating the road traffic ontology library according to the ontology instance data. Compared with the prior art, the method has the advantages of effectively increasing the searching efficiency, ensuring the analysis accuracy of multi-source heterogeneous traffic big data, and the like.
Description
Technical field
The present invention relates to intelligent transportation system integration field, especially relate to a kind of big data multidate information method for fast searching of traffic and application thereof。
Background technology
Along with constantly putting into and living standards of the people constantly improve of Transportation Infrastructure Construction, means of transportation scale and vehicles quantity just rise with surprising rapidity, traffic congestion, vehicle accident occurrence frequency be consequently increased, bring huge challenge to traffic administration。Traffic policy needs to utilize big data analysis technique to instruct epoch of transport development coming。Urban transportation informatization is built through development for many years, have accumulated substantial amounts of data resource, and these data resources are dispersed in industry-by-industry department, plateform system, have played great function for Informatization Service。But along with the quick growth of data scale, the open demand of especially big market demand, current data storage is brought new challenge with application model。Big data are analyzed the search needing to carry out big data before, but owing to field of traffic information resources have feature heterogeneous, isomery, traditional search based on keyword is difficult to meet the search request of big data analysis multi-source multi-dimensional association analysis and knowledge excavation。
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and provide and a kind of be effectively improved search efficiency, ensure the big data multidate information method for fast searching of traffic to multi-source heterogeneous traffic big data analysis accuracy and application thereof。
The purpose of the present invention can be achieved through the following technical solutions:
A kind of big data multidate information method for fast searching of traffic, comprises the following steps:
A1) search mission is received；
A2) carry out semantic search according to described search mission at the road traffic ontology library built, obtain multidate information and the semantic information of correspondence；
Described road traffic ontology library for Traffic Information is carried out semantic association, its build particularly as follows:
A21) build road traffic ontology model, utilize D2RQ mapping language to formulate mapping ruler, and then obtain corresponding mapped file；
A22) the static traffic data on big data platform and dynamic traffic data storage information are obtained；
A23) with mapped file, described static traffic data are stored information MAP with dynamic traffic data according to road traffic ontology model and become body instance data；
A24) according to described instances of ontology data genaration road traffic ontology library。
Described step A21) in, the structure of road traffic ontology model particularly as follows:
A211) according to field of road traffic basic conception and interrelated, road traffic concept relation graph is drawn；
A212) the static traffic data on big data platform and dynamic traffic data storage information are obtained, static traffic data are stored information with dynamic traffic data by dynamic traffic data and carries out interrelated, from geographic object, geometric object, road furniture, Traffic Information, road traffic object, six levels of storage information, described field of road traffic concept relation graph is described, generates road traffic ontology model。
Described dynamic traffic data storage information include dynamic traffic data collecting device information, in the storage address of big data platform, gather data type and gather data class。
Described mapping ruler includes class mapping ruler, subclass mapping ruler, object properties mapping ruler and numerical attribute mapping ruler。
Described step A2) in, after carrying out semantic search, it is thus achieved that dynamic traffic data storage information and semantic information, then store information as big data search condition using described dynamic traffic data, big tables of data is carried out binary search, obtains Search Results。
The big market demand method of servicing of a kind of traffic based on body, comprises the following steps:
B1) obtaining application demand, described application demand is analyzed and task distribution by applied analysis module；
B2) task of applied analysis module assignment is obtained；
B3) the big data multidate information method for fast searching of traffic according to claim 1-5 obtains corresponding multidate information and semantic information；
B4) algorithm model matched is obtained according to described task；
B5) application request result corresponding with application demand is returned according to described multidate information, semantic information and algorithm model。
This application service method realizes based on Hadoop platform。
The described algorithm model matched is obtained by MapReduce module coupling。
Compared with prior art, the method have the advantages that
(1) body is as a kind of conceptual model that can describe information system on semantic and knowledge hierarchy, it is provided that resource description and inquiry necessary unit language, can provide necessary semantic tagger for information source and have good concept hierarchy and the support to logical reasoning。The application is classified as static traffic data and dynamic traffic data according to the character of traffic data, and by dynamic traffic data storage information, static traffic data are associated with dynamic traffic data, set up road traffic ontology library, by the semantic search to ontology library, it is ensured that data search is quickly effective greatly。
(2) owing to traffic data has the characteristic of multidimensional volume, it is associated traffic data describing by building ontology model, original traffic information data can be made to have unified data model, provide strong technical guarantee for the big data analysis of traffic。The application, by building road traffic ontology library, provides data message comprehensive, reliable for big data analysis。
(3) the road traffic ontology model that the present invention builds describes the shared vocabulary of field of road traffic, these vocabulary cover geographic object, geometric object, road furniture, Traffic Information, road traffic object and storage information and the relation between them, constructed road traffic ontology model information is comprehensively reliable, and then improves the rapidity of big data search。
(4) body, semantic net are incorporated in the big data analysis of traffic by the present invention, ensure that the semantic unified of highway traffic data, ensure the multi-source heterogeneous big data analysis accuracy of traffic, rapidity, while realizing multi-source heterogeneous Data Integration, provided semantic logic support for big data analysis again。
Accompanying drawing explanation
Fig. 1 (a) stores information extraction example for dynamic traffic data；
Fig. 1 (b) stores information association example for dynamic traffic data；
Fig. 2 is that road traffic ontology model builds schematic diagram；
Fig. 3 is the overhead ontology model example in north and south；
Fig. 4 is road traffic ontology model and ontology library structure schematic flow sheet；
Fig. 5 is the big market demand service procedure schematic diagram of the present invention。
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail。The present embodiment is carried out premised on technical solution of the present invention, gives detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment。
Body is as a kind of conceptual model that can describe information system on semantic and knowledge hierarchy, it is provided that resource description and inquiry necessary unit language, can provide necessary semantic tagger for information source and have good concept hierarchy and the support to logical reasoning。Traffic data is divided into static data and dynamic data according to transport information character by the present invention, and sets up associating between static data with dynamic data storage information；Associate according to existing traffic data, transport information is carried out the modeling of road traffic ontology model, set up the road traffic ontology library that traffic static data (containing dynamic memory information) is corresponding；The middle semantic logic layer stored as big data analysis with big data by ontology library, by realizing the accurate fast search to traffic dynamic information to the semantic search of ontology library。
Dynamic traffic data storage information by big data platform extract, these storage information include dynamic traffic data collecting device information, in the storage address of big data platform, gather data type and gather data class。For coil NBDX01, dynamic traffic data is stored information extraction to illustrate。As shown in Fig. 1 (a), its storage information gathering data, as collecting device, is extracted by coil NBDX01, including: device id, device type, storage table name, collection data type and collection data class。Wherein, association between storage information is such as shown in Fig. 1 (b), the corresponding multiple collection data type of different types of equipment, and the collection data class that different acquisition data type is corresponding different, it is detector if coil NBDX01 is device type, the collection data type that this detector is corresponding includes Loopgroop_20s, Loopgroop_5min, LPRE etc., wherein, gather collection data class corresponding for data type Loopgroop_20s and include FDT_TIME, FSTR_VALIDITY, FINT_LV etc.。
As in figure 2 it is shown, when carrying out the modeling of road traffic ontology model, according to field of traffic knowledge, be associated the storage information of static traffic information and dynamic traffic data analyzing, carry out the road traffic Ontology Modeling towards the big data analysis of traffic。Road traffic static information and multidate information are associated by the road traffic ontology model that the present embodiment is set up by Dynamic Data Acquiring equipment, the dynamic data of big data platform is associated with road traffic ontology model by dynamic data storage information simultaneously, which depict the shared vocabulary of field of road traffic, these vocabulary cover geographic object, geometric object, road furniture, Traffic Information, road traffic object and storage information and the relation between them。
The structure of road traffic ontology model is specifically described as:
A211) according to field of road traffic basic conception and interrelated, road traffic concept relation graph is drawn；
A212) the static traffic data on big data platform and dynamic traffic data storage information are obtained, static traffic data are stored information with dynamic traffic data by dynamic traffic data and carries out interrelated, from geographic object, geometric object, road furniture, Traffic Information, road traffic object, six levels of storage information, field of road traffic concept relation graph is described, generates road traffic ontology model。
After obtaining road traffic ontology model, available prot é g é ontology edit tool carries out Ontology Model Development, though domain knowledge formalization。
For South-North Viaduct, road traffic ontology model is illustrated。As shown in Figure 3, South-North Viaduct is geographic object example, South-North Viaduct location expression on map is geometric object example, coil NBDX02 on South-North Viaduct, it it is road furniture example, the data type FINT_LV that coil NBDX02 gathers is Traffic Information example, the large car that the data type FINT_LV that coil NBDX02 gathers describes is road traffic object instance, the storage information StorageInf_NBDX02 that coil NBDX02 has is storage information instances, StorageInf_NBDX02 describes the coil NBDX02 data type FINT_LV gathered in the storage address of big data platform。
Road traffic ontology library is for carrying out semantic association by Traffic Information, as shown in Figure 4, its build particularly as follows:
A21) building road traffic ontology model, utilize D2RQ mapping language to formulate mapping ruler, and then obtain corresponding mapped file, mapping ruler includes class mapping ruler, subclass mapping ruler, object properties mapping ruler and numerical attribute mapping ruler；
A22) the static traffic data on big data platform and dynamic traffic data storage information are obtained；
A23) adopt JENA development platform, call D2RQ mapping engine, with mapped file, static traffic data are stored information MAP with dynamic traffic data according to road traffic ontology model and become body instance data；
A24) according to instances of ontology data genaration road traffic ontology library。
Traffic Information is carried out semantic association by road traffic ontology library, establishes one layer of semantic logic layer semantic net between big data analysis and big data storage。Described semantic net provides the semantic search function of big data analysis, specifically includes that inquiry request coupling, query task generate, reasoning task generates and Query Result resolves。Big data search result fast and accurately can be provided for big data analysis by semantic net。
By foregoing description, the present embodiment provides a kind of big data multidate information method for fast searching of traffic, comprises the following steps:
A1) search mission is received；
A2) semantic search is carried out according to described search mission at the road traffic ontology library built, after carrying out semantic search, obtain dynamic traffic data storage information and semantic information, information is stored as big data search condition again using described dynamic traffic data, big tables of data is carried out binary search, obtains Search Results。
As it is shown in figure 5, above-mentioned traffic big data multidate information method for fast searching can be applicable to the big market demand service of the traffic based on body, this application service realizes based on Hadoop platform, comprises the following steps:
B1) obtaining application demand, application demand is analyzed by applied analysis module, and after carrying out matching judgment, carries out task distribution after the match is successful, if unsuccessful, needs to reacquire application demand；
B2) task of applied analysis module assignment is obtained；
B3) corresponding multidate information and semantic information are obtained according to the big data multidate information method for fast searching of above-mentioned traffic；
B4) obtained the algorithm model matched by MapReduce module according to task；
B5) carry out data analysis according to multidate information, semantic information and algorithm model, return application request result corresponding with application demand。
Claims (8)
1. the big data multidate information method for fast searching of traffic, it is characterised in that comprise the following steps:
A1) search mission is received；
A2) carry out semantic search according to described search mission at the road traffic ontology library built, obtain multidate information and the semantic information of correspondence；
Described road traffic ontology library for Traffic Information is carried out semantic association, its build particularly as follows:
A21) build road traffic ontology model, utilize D2RQ mapping language to formulate mapping ruler, and then obtain corresponding mapped file；
A22) the static traffic data on big data platform and dynamic traffic data storage information are obtained；
A23) with mapped file, described static traffic data are stored information MAP with dynamic traffic data according to road traffic ontology model and become body instance data；
A24) according to described instances of ontology data genaration road traffic ontology library。
2. the big data multidate information method for fast searching of traffic according to claim 1, it is characterised in that described step A21) in, the structure of road traffic ontology model particularly as follows:
A211) according to field of road traffic basic conception and interrelated, road traffic concept relation graph is drawn；
A212) the static traffic data on big data platform and dynamic traffic data storage information are obtained, static traffic data are stored information with dynamic traffic data by dynamic traffic data and carries out interrelated, from geographic object, geometric object, road furniture, Traffic Information, road traffic object, six levels of storage information, described field of road traffic concept relation graph is described, generates road traffic ontology model。
3. the big data multidate information method for fast searching of traffic according to claim 1 and 2, it is characterized in that, described dynamic traffic data storage information include dynamic traffic data collecting device information, in the storage address of big data platform, gather data type and gather data class。
4. the big data multidate information method for fast searching of traffic according to claim 1, it is characterised in that described mapping ruler includes class mapping ruler, subclass mapping ruler, object properties mapping ruler and numerical attribute mapping ruler。
5. the big data multidate information method for fast searching of traffic according to claim 1, it is characterized in that, described step A2) in, after carrying out semantic search, obtain dynamic traffic data storage information and semantic information, store information as big data search condition using described dynamic traffic data again, big tables of data is carried out binary search, obtains Search Results。
6. the big market demand method of servicing of the traffic based on body, it is characterised in that comprise the following steps:
B1) obtaining application demand, described application demand is analyzed and task distribution by applied analysis module；
B2) task of applied analysis module assignment is obtained；
B3) the big data multidate information method for fast searching of traffic according to claim 1-5 obtains corresponding multidate information and semantic information；
B4) algorithm model matched is obtained according to described task；
B5) application request result corresponding with application demand is returned according to described multidate information, semantic information and algorithm model。
7. the big market demand method of servicing of the traffic based on body according to claim 6, it is characterised in that this application service method realizes based on Hadoop platform。
8. the big market demand method of servicing of the traffic based on body according to claim 6, it is characterised in that described in the algorithm model that matches obtained by MapReduce module coupling。
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